Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
CVE-2026-55121 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Reported by NVD (nvd).
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
CVE-2026-55121 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
Reported by NVD (nvd).
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL GuardHOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
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